321056869 has 12 divisors (see below), whose sum is σ = 378206400. Its totient is φ = 271704888.

The previous prime is 321056837. The next prime is 321056873. The reversal of 321056869 is 968650123.

It is not a de Polignac number, because 321056869 - 2⁵ = 321056837 is a prime.

It is a super-2 number, since 2×321056869² = 206155026264166322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321056899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37599 + ... + 45340.

It is an arithmetic number, because the mean of its divisors is an integer number (31517200).

Almost surely, 2^321056869 is an apocalyptic number.

It is an amenable number.

321056869 is a deficient number, since it is larger than the sum of its proper divisors (57149531).

321056869 is an equidigital number, since it uses as much as digits as its factorization.

321056869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83032 (or 83025 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 321056869 is about 17918.0598559107. The cubic root of 321056869 is about 684.7425597677.

The spelling of 321056869 in words is "three hundred twenty-one million, fifty-six thousand, eight hundred sixty-nine".